<!DOCTYPE html>
<div style="columns:2;">
  <div contenteditable id="container" style="height:100px;"></div>
</div>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
  test(()=> {
    var y = container.offsetTop;
    eventSender.mouseMoveTo(container.offsetLeft, y);
    eventSender.mouseDown();
    eventSender.mouseMoveTo(1000000, y);
    eventSender.mouseUp();
  }, "no crash or DCHECK failure");
</script>
